linux-kernel - Re: [PATCH v4 0/2] Enable USB SS qmp phy for Qualcomm SM6115 SoC

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Message-ID: <CAH=2NtwmFWVCwU87=kr_mUqer_8kOiTgHANSt5sxHkH3fLB+7w@mail.gmail.com>
Date:   Sat, 1 Apr 2023 23:08:21 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        linux-kernel@...r.kernel.org, bhupesh.linux@...il.com,
        robh+dt@...nel.org, krzysztof.kozlowski@...aro.org
Subject: Re: [PATCH v4 0/2] Enable USB SS qmp phy for Qualcomm SM6115 SoC

On Sat, 1 Apr 2023 at 22:40, Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> On Sat, 1 Apr 2023 at 18:49, Bhupesh Sharma <bhupesh.sharma@...aro.org> wrote:
> >
> > Changes since v3:
> > -----------------
> > - v3 can be seen here: https://lore.kernel.org/linux-arm-msm/20221215094532.589291-4-bhupesh.sharma@linaro.org/
> > - Fixed v4 as per the downstream driver code: https://android.googlesource.com/kernel/msm-extra/devicetree/+/refs/heads/android-msm-bramble-4.19-android11-qpr1/qcom/bengal-usb.dtsi#296
> > - As per the downstream code, the qmp phy on this SoC is similar to the
> >   SM8150 qmp phy and is indeed not a qmp-dp combo phy.
>
> Nit: sm8150 has both USB UNI PHY and USB+DP combo PHYs, so this note
> is incorrect.

I think I should have clarified a bit more here, but the complete
context is that for the previous versions of this patch there were
conversations on irc as to whether this was a
'qcom,usb-ssphy-qmp-usb3-or-dp' or a  'qcom,usb-ssphy-qmp-dp-combo' as
per downstream code and hardware documentation.

But after a careful look at the
<https://android.googlesource.com/kernel/msm-extra/devicetree/+/refs/heads/android-msm-bramble-4.19-android11-qpr1/qcom/bengal-usb.dtsi#296>
documentation it appears that this indeed is a
'qcom,usb-ssphy-qmp-usb3-or-dp phy and not a 'dp-combo' phy.

Thanks,
Bhupesh

> >
> > This patchset adds the support for USB SS qmp phy for Qualcomm SM6115
> > SoC.
> >
> > Bhupesh Sharma (2):
> >   dt-bindings: phy: qcom,qmp-usb: Fix phy subnode for SM6115 & QCM2290
> >     USB3 PHY
> >   arm64: dts: qcom: sm6115: Add USB SS qmp phy node
> >
> >  .../phy/qcom,msm8996-qmp-usb3-phy.yaml        |  4 +--
> >  .../boot/dts/qcom/sm4250-oneplus-billie2.dts  |  3 ++
> >  arch/arm64/boot/dts/qcom/sm6115.dtsi          | 36 +++++++++++++++++--
> >  .../boot/dts/qcom/sm6115p-lenovo-j606f.dts    |  3 ++
> >  4 files changed, 42 insertions(+), 4 deletions(-)
> >
> > --
> > 2.38.1
> >
>
>
> --
> With best wishes
> Dmitry